fix: differentiate reconnect title based on nextRetryAt state

When nextRetryAt is null the connection is actively retrying, so show
'Reconnecting to T3 Server' instead of the same 'Disconnected' string
that is used when waiting for the next scheduled retry.

Author: cursoragent

apps/web/src/components/WebSocketConnectionSurface.tsx

@@ -60,7 +60,7 @@ function describeExhaustedToast(): string {
 
 function buildReconnectTitle(status: WsConnectionStatus): string {
   if (status.nextRetryAt === null) {
-    return "Disconnected from T3 Server";
+    return "Reconnecting to T3 Server";
   }
 
   return "Disconnected from T3 Server";